The best way to network your lolz is to add other's lolz to your favorites a lot and then they'll feel obliged to favorite your lolz which puts your lolz on the dashboards of all of their friends and so on down the line ... Also let me know if you've got something really special you want me to favorite and I will
The best places to promote your lulz remain Facebook and Twitter. There are also categories for memes and lolcats on Redit and other feed type sites. You can also sign up for an account on BuzzFeed or BoingBoing. If your lol gets shared on Facebook it's the same as someone favoriting it on Cheezburger thus increasing the likelihood of making the voting and/or the front page.